Rounding in the price db.

[Geert Janssens]

On Monday 10 August 2015 16:27:40 John Ralls wrote:
> > On Aug 10, 2015, at 10:34 AM, Geert Janssens
> > I seem to remember that banks here use 6 significant digits in
> > exchange rates, which is not quite the same as 6 places after the
> > decimal point. Your USD-Sao Tomean Dobra illustrates this: due to
> > the extreme value difference between the two you need 10 digits
> > after the decimal point, but only 6 of them are significant (ie not
> > a leading zero).
> > 
> > Is this something our gnc_numeric code supports and can be used by
> > the price db ?
> 
> We have “significant digits” rounding code, but IIRC it’s really six
> decimal places. If we were to have real significant digits we’d need
> to be careful to keep it away from the debits-and-credits code or it
> could make a real mess.
> 

I'm probably slow here. What mess would that create ?

Geert